并联有源补偿无电解电容功率因数校正电源设计

发布时间：2018-05-17 05:36

本文选题：功率因数校正 + 无电解电容　；参考：《燕山大学》2014年硕士论文

【摘要】：功率因数校正技术被广泛地应用于国民生产和生活中的各个领域。功率因数校正装置的输出端常需要大容量电解电容以抑制输出电压纹波、平衡输入功率脉动。电解电容寿命短、可靠性低，已经成为影响了功率因数校正装置使用寿命的最大障碍。本文在阅读了大量相关文献的基础上，对各种无电解电容功率因数校正电路方案进行了分析和比较，最终选择并联有源补偿无电解电容功率因数校正方案，设计了一种大功率低频无极灯驱动电源。本文对开环稳态条件下并联Buck/Boost双向变换器补偿PFC低频功率脉动的基本原理进行了深入分析，导出了占空比与PFC输出电压脉动量的数学关系。在此基础上，分别应用了开环固定占空比方法和输出电压闭环控制方法，实现了一种无电解电容的PFC解决方案。两种方案简单、有效易于工程应用。在对LC-C型和LCC型两种镇流器的谐振特性和负载特性进行比较分析，验证了LC-C型镇流器作为无极灯驱动电路的优越性，最终选择了LC-C型镇流器作为无极灯的驱动电源谐振拓扑。在此理论和仿真基础上，制作了一台200W无电解电容无极灯驱动电源样机，，进行了硬件试验。试验结果验证了理论分析和仿真结果的正确性。
[Abstract]:Power factor correction (PFC) technology is widely used in Yu Guomin production and life. The output of power factor correction device often needs large capacity electrolytic capacitance to restrain the ripple of output voltage and balance the input power pulse. The short life and low reliability of electrolytic capacitor have become the biggest obstacle to the service life of power factor correction device. On the basis of reading a large number of related documents, this paper analyzes and compares the power factor correction schemes of various electrolytic capacitors, and finally chooses the power factor correction scheme of shunt active compensation without electrolytic capacitors. A high-power low-frequency pole-free lamp driving power supply is designed. In this paper, the basic principle of compensating PFC low frequency power pulsation by parallel Buck/Boost bidirectional converters under open-loop steady state is deeply analyzed, and the mathematical relationship between duty cycle and PFC output voltage pulsation is derived. On this basis, the open-loop fixed duty cycle method and the output voltage closed-loop control method are applied, respectively, to realize a PFC solution without electrolytic capacitance. The two schemes are simple, effective and easy to be applied in engineering. The resonant and load characteristics of LC-C ballast and LCC ballast are compared and analyzed. The advantages of LC-C ballast as the driving circuit of non-electrode lamp are verified. Finally, the LC-C ballast is chosen as the resonant topology of the drive power supply of the electrodeless lamp. On the basis of this theory and simulation, a 200W electrolytic capacitance without electrode lamp driving power prototype is made, and the hardware experiment is carried out. The experimental results verify the correctness of the theoretical analysis and simulation results.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46

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